To Renew Final Fuel Filter Elements TV8.510 (M)
Both elements should be changed at the same time, as follows:
1.
Thoroughly clean exterior of filter assembly.
2.
Unscrew vent plug (1, Fig 10 (c) ) by two or three turns and drain filter by releasing drain plugs (2, Fig. 10 (c) ).
3.
Unscrew filter bowl securing setscrews at top of filter (3, Fig. 10 (c)) remove bottom covers and transparent bowls
and discard elements. Ensure, when removing elements, that no fuel is allowed to leak onto the engine.
4.
Thoroughly clean filter head, bottom covers and transparent bowls in a suitable cleaning fluid.
5.
Inspect sealing rings and renew, if damaged in any way.
6.
Place bottom covers, transparent bowl and new elements together, position these assemblies squarely under the
filter head and secure with their retaining setscrews.
7.
Reinstall drain plugs in bottom covers.
8.
Unscrew priming pump handle (4, Fig. 10 (c)) from filter head and operate pump until fuel, free from air bubbles,
issues from filter vent point.
9.
Tighten vent plug and screw pump handle into filter head.
IDLING SPEED SETTING
C.A.V. Rotary Type Pumps
D.P.A. pumps have three types of adjustment. The first type is a spring loaded screw (6.354). The second is on the
reversible governor head and consists of a setscrew and locknut. The third is on the governor housing (mechanically
governed type pump) and consists of a nut and setscrew.
For the first type, turn the screw clockwise to increase engine speed or anti-clockwise to decrease (see Fig. 11 (a) ).
For the second type, undo the locknut and set the speed (see Fig. 11 (c) and 11 (d) ). This must be done in conjunction
with the setting of the anti-stall device (see page 51).
For the third type, undo the locknut and set the required speed.
S.I.G.M.A. Rotary Type Pumps (TV8.510 (M) )
The idle speed adjustment screw is shown in Fig. 9 (d).
In-Line Pumps
The idle adjustment screw is the upper of the two adjustable stop screws situated at the right hand rear of the fuel
injection pump (V8.510 (M) engines, Fig. 11 (b)).
The idling speed will vary according to application. For details, inquire at the nearest Perkins. C.A.V. or Simms
distributor. (Or Perkins Engines Service Department: Farmington, Michigan or Rexdale, Ontario).
Fig. 11 (a)
Fig. 11 (b)
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